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			ttycat.c
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/*====================================================================*
 *
 *   Copyright (c) 2013 Qualcomm Atheros, Inc.
 *
 *   All rights reserved.
 *
 *   Redistribution and use in source and binary forms, with or 
 *   without modification, are permitted (subject to the limitations 
 *   in the disclaimer below) provided that the following conditions 
 *   are met:
 *
 *   * Redistributions of source code must retain the above copyright 
 *     notice, this list of conditions and the following disclaimer.
 *
 *   * Redistributions in binary form must reproduce the above 
 *     copyright notice, this list of conditions and the following 
 *     disclaimer in the documentation and/or other materials 
 *     provided with the distribution.
 *
 *   * Neither the name of Qualcomm Atheros nor the names of 
 *     its contributors may be used to endorse or promote products 
 *     derived from this software without specific prior written 
 *     permission.
 *
 *   NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE 
 *   GRANTED BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE 
 *   COPYRIGHT HOLDERS AND CONTRIBUTORS &quot;AS IS&quot; AND ANY EXPRESS OR 
 *   IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
 *   WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
 *   PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER 
 *   OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
 *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
 *   NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
 *   LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
 *   HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
 *   CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 
 *   OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 
 *   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
 *
 *--------------------------------------------------------------------*/

/*====================================================================*
 *
 *   ttycat.c - serial port test program;
 *
 *   write one or more files to a serial device;
 *
 *--------------------------------------------------------------------*/

/*====================================================================*
 *   system header files;
 *--------------------------------------------------------------------*/

#include &lt;stdlib.h&gt;
#include &lt;limits.h&gt;
#include &lt;memory.h&gt;
#include &lt;signal.h&gt;
#include &lt;termios.h&gt;
#include &lt;unistd.h&gt;

/*====================================================================*
 *   custom header files;
 *--------------------------------------------------------------------*/

#include &quot;../tools/getoptv.h&quot;
#include &quot;../tools/putoptv.h&quot;
#include &quot;../tools/number.h&quot;
#include &quot;../tools/error.h&quot;
#include &quot;../tools/files.h&quot;
#include &quot;../serial/serial.h&quot;

/*====================================================================*
 *   custom source files;
 *--------------------------------------------------------------------*/

#ifndef MAKEFILE
#include &quot;../tools/getoptv.c&quot;
#include &quot;../tools/putoptv.c&quot;
#include &quot;../tools/version.c&quot;
#include &quot;../tools/efreopen.c&quot;
#include &quot;../tools/uintspec.c&quot;
#include &quot;../tools/todigit.c&quot;
#include &quot;../tools/error.c&quot;
#endif

/*====================================================================*
 *   program warnings;
 *--------------------------------------------------------------------*/

#if defined (WIN32)
#error &quot;This program does not support Windows platforms&quot;
#endif

/*====================================================================*
 *
 *   signed copy (signed ifd, signed ofd, void * memory, signed extent)
 *
 *   copy ifd to ofd using a buffer of specified size;
 *
 *--------------------------------------------------------------------*/

static signed copy (signed ifd, signed ofd, void * memory, signed extent)

{
	while ((extent = read (ifd, memory, extent)) &gt; 0)
	{
		if (write (ofd, memory, extent) &lt; extent)
		{
			return (-1);
		}
	}
	return (0);
}

/*====================================================================*
 *
 *   int main (int argc, char const * argv []);
 *
 *--------------------------------------------------------------------*/

int main (int argc, char const * argv [])

{
	static char const * optv [] =
	{
		&quot;s:&quot;,
		PUTOPTV_S_FUNNEL,
		&quot;copy one or more files to a  serial device&quot;,
		&quot;s n\tline speed is (n) [115200]&quot;,
		(char const *)(0)
	};
	struct termios restore;
	struct termios current;
	speed_t speed = B115200;
	byte buffer [512];
	signed c;
	while ((c = getoptv (argc, argv, optv)) != -1)
	{
		switch (c)
		{
		case 's':
			if (baudrate (uintspec (optarg, 0, UINT_MAX), &amp;speed))
			{
				error (1, 0, &quot;could not set baud rate&quot;);
			}
			break;
		default:
			break;
		}
	}
	argc -= optind;
	argv += optind;
	if (!isatty (STDOUT_FILENO))
	{
		error (1, ENOTSUP, &quot;stdout must be a serial line device&quot;);
	}
	tcflush (STDOUT_FILENO, TCIFLUSH);
	tcgetattr (STDOUT_FILENO, &amp;restore);
	memset (&amp;current, 0, sizeof (current));
	current.c_cflag = speed | CS8 | CLOCAL | CREAD;
	current.c_iflag = IGNPAR;
	current.c_oflag = 0;
	current.c_lflag = 0;
	current.c_cc [VTIME] = 0;
	current.c_cc [VMIN] = 5;
	tcsetattr (STDOUT_FILENO, TCSANOW, &amp;current);
	if (!argc)
	{
		copy (STDIN_FILENO, STDOUT_FILENO, buffer, sizeof (buffer));
	}
	while ((argc) &amp;&amp; (* argv))
	{
		if (efreopen (* argv, &quot;rb&quot;, stdin))
		{
			copy (STDIN_FILENO, STDOUT_FILENO, buffer, sizeof (buffer));
		}
		argc--;
		argv++;
	}
	tcsetattr (STDOUT_FILENO, TCSANOW, &amp;restore);
	exit (0);
}


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